Engineering Geological Evaluation Of Chang Chun Rail Rapid Transit Line D Section

RRT(Rail Rapid Transit) usually means fast and large volume of public transport, which takes electric energy as power and rail as operation mode. RRT includes not only a high speed railway between the cities, but also the subway to work and back. As the development of social science and economy, RRT has greatly developed over a hundred years because it is fast, clean, and efficient,used as the most important development of public transport by more and more cities. With the rapid development of urbanization, RRT is also continuous extended and connected. Along with the construction and development of RRT, the foundation of engineering investigation is more scientific and systematic in constant practice. The geological conditions in the construction of RRT engineering are complex and changeable, which cause the complexity of rail transit structure, the diversity of technology, the high risk of quality and safety. At the same time, the geological conditions also restrict the construction period and cost. Therefore, in order to ensure safe, fast and stable of RRT, geological work plays a vital role. It should be further studied and analyzed the geological environment of the location of the project, and comprehensively understand and control all kinds of geological risks that may arise.Based on the RRT in the previous survey, taking Changchun rail rapid D line 6 section as an example, according to its specific location and engineering characteristics, a variety of in-situ testing and test methods was used to make a detailed investigation and to make the engineering geological evaluation. This engineering geological investigation mainly includes the following contents: the first is to make the analysis of engineering geological conditions by in-situ test, geotechnical test results combined with regional geological data; the second is to make analysis of frost heave, earthquakes and other special geological conditions by the measurement of wave velocity, apparent resistivity test; the final is to make recommendations to the pile foundation engineering parameters through the comprehensive analysis of the data and give advice on site geological conditions of engineering effects. The conclusion of the project provides a scientific and reliable basis for safe, rapid and stable engineering construction. It has important theoretical and practical significance of the conclusion.